A NORTHERN ADRIATIC POPULATION OF BUENIA AFFINIS (GOBIIDAE) by Marcelo KOVA¸I¶ (1) ABSTRACT. - Specimens of the gobiid Buenia affinis Iljin, 1930 were collected during scuba-diving in the Kvarner area, northern Adriatic Sea. Specimens were found on a sandy bottom, at depths of 3-25 m. Standard lengths of the 16 speci- mens collected were from 23.9-33.3 mm. The present finding is the first positive record in the Adriatic Sea and provides data on morphology (morphometrics, meristics, papillae counts, coloration) and ecology (habitat, biocenosis, fish assem- blage) of the Adriatic specimens. RÉSUMÉ. - Une population de Buenia affinis (Gobiidae) du nord de la mer Adriatique. Des spécimens du gobie Buenia affinis Iljin, 1930 ont été collectés en plongée dans la région de Quarnero au nord de la mer Adriatique. Les spécimens ont été trouvés sur un fond sableux, à des profondeurs de 3 à 25 m. La longueur standard des 16 spécimens était comprise entre 23,9 à 33,3 mm. Cette capture est la première authentique de cette espèce dans la mer Adriatique. Des données sont apportées sur la morphologie (morphométrie, méristique, nombre de papilles, colora- tion) et sur l’écologie (habitat, biocénose et peuplement de poissons) des spécimens de la mer Adriatique. Key words. - Gobiidae - Buenia affinis - MED - North-Eastern Adriatic - Morphology - Ecology. Buenia affinis Iljin, 1930 is a Mediterranean gobiid spe- mens was examined and the identification confirmed by P.J. cies known only from a few published records (Miller, Miller (University Bristol). 1973, 1986). Miller (1972) discovered that Kolombatovi¢’s (1891) syntypes of Gobius affinis deposited in the MATERIAL AND METHODS Naturhistorishes Musem, Vienna, belong to another gobiid species, Pomatoschistus pictus (Malm, 1865). Therefore, Material the only published records of B. affinis remained those of Sanzo (1911) and Fage (1918). These papers provided only All specimens were collected by the author in the data on the lateral-line system in specimens received from Kvarner area, Croatia, they are deposited and registered at Stazione Zoologica di Napoli (Sanzo, 1911) and on mor- the Prirodoslovni muzej Rijeka (PMR). Male, 31.7+6 mm, phology of postlarvae and meristics of anal and dorsal fins PMR VP976, O≈tro, 16 Apr. 1996; male, 28.8+5.5 mm, of postlarval specimens from the Aegean (Fage, 1918). PMR VP454, Malinska, 17 Apr. 1996; male, 28+5.2 mm, However, even Fage was not completely sure about species PMR VP455, O≈tro, 9 May 1996; two females, 33.3+5.5, identification of these postlarvae and Miller (1986) mentio- 31.0+5.9 mm, PMR VP983, O≈tro, 16 May 1996; two fema- ned this record as doubtful. Miller (1972,1986) considered les, 30.3+6.2, 25.7+4.8 mm, PMR VP982, Grgur, 12. Jun B. affinis as valid species correctly placed in Buenia Iljin, 1996; female, 30.7+5.5 mm, PMR VP980, O≈tro, 29. Aug 1930, based on Sanzo’s description of the lateral-line sys- 1996; male, 29.8+5.5 mm, PMR VP977, O≈tro, 10 Feb tem. Miller (1986) added to the data on B. affinis a third 1997; male, 29.5+5.4 mm, PMR VP978, O≈tro, 19 Feb. locality approximately between Nice and Genoa, and a 1997; three females, 32+5.7, 31.1+4.7, 27.3+5.1 mm, PMR count of 36 scales in lateral series without any additional VP981, O≈tro, 7 Mar. 1997; three males, 27.7+4.9, 25.1+4.9, explanation or cited reference. Since the data on the meris- 23.9+4.9 mm, PMR VP979, O≈tro, 25 Jun. 1997. Material tics of anal fin, second dorsal fin and scales in lateral series for osteological examination: five females, 29.1+6.2, are not completely certain to belong to B. affinis, the only 27.6+5.5, 26.4+4.4, 25.7+4.5, 23.3+5.1 mm, PMR VP984, positive morphological character remains the lateral-line and four males 24.7+4.5, 24.5+5.0, 24.3+4.4, 23.6+4.9 mm, system. The specimens collected since 1996 in the Kvarner PMR VP985, O≈tro, 27 May 1996. area (Fig. 1) show the same arrangement of sensory papillae Methods as Sanzo’s (1911) description and illustrations, and were therefore identified as B. affinis. One of the collected speci- Morphometric and meristic methods as in Miller (1988). (1) Prirodoslovni muzej Rijeka. Lorenzov prolaz 1, HR-51000 Rijeka, CROATIA. [[email protected]] Cybium 2002, 26(3): 197-201. A northern Adriatic population of Buenia affinis Kova©i¢ affinis (at depths 5, 7.5, 10, 12.5, 15 and 20 m) and granu- lometric analyses were done using standard laboratory tests (Anonymous, 1990). Sediment types were classified accor- ding to standard sedimentologic tables (Bell, 1993; Ti≈ljar, 1994). RESULTS Generic and species identification The genera Buenia, Deltentosteus Gill, Lebetus Winther, Lesueurigobius Whitley and Speleogobius Zander & Jelinek share a unique characteristic among eastern Atlantic and Mediterranean gobies in having no transverse a and c rows. The genus Buenia is delimited from other genera of para- phyletic DLBS group (McKay and Miller, 1997) and from Lesueurigobius by the following combination of characters: (1) anterior and posterior oculoscapular, and preopercular head canals present and normally developed, without nume- rous extra pores; (2) pelvic disc with anterior transverse membrane; (3) predorsal area and head naked. B. affinis Figure 1. - The Kvarner area, Croatia. Collecting sites: (1) O≈tro, may be distinguished from the other Buenia species, B. jef- (2) Malinska and (3) Grgur. freysii (Günther, 1867) by (1) lower P fin ray count (P 15-16 against P 18 in B. jeffreysii), (2) lower count of sensory papillae in row c below eye (5, ending before cp, against 8, Fin abbreviations. - A: anal fin; C: caudal fin; D1, D2: first ending above cp), (3) higher count of sensory papillae in and second dorsal fins; P: pectoral fin; V: pelvic disc. row b (b 4-6 against b 3), (4) D1 rays, including D1 II not Morphometric abbreviations. - Ab: anal fin base; Ad and distinctly elongate in both sexes (D1 II elongate in males of Aw: body depth and width at anal fin origin; Cl: caudal fin B. jeffreysii) and (5) lower vertebral count (11+17 against length; CHd: cheek depth; CP, CPw and CPd: caudal 12+18). Data for B. jeffreysii are from Miller (1963, 1986) peduncle length, width and depth, CPw measured with CPd, and McKay and Miller (1997), including counts of sensory at minimum caudal peduncle depth; D1b and D2b: first and papillae from illustrations (fig. 21 in Miller, 1963 and p. second dorsal fin base; E: eye diameter; H and Hw: head 1027 in Miller, 1986). length and width; I: interorbital width; Pl: pectoral fin length; PO: postorbital length; SL: standard length; SN, Morphology snout length; SN/A and SN/AN, distance from snout to ver- Body proportions (Tab. I). - Body subcylindrical, laterally tical of anal fin origin and anus; SN/D1 and SN/D2: dis- compressed towards caudal fin (Fig. 2). Head fairly long. tance from snout to origin of first and second dorsal fins; Snout moderately large, sharp (snout angle about 55°) with SN/V: distance from snout to vertical of pelvic fin origin; V/ somewhat sloping profile. Anterior nostril short, tubular, AN: distance from pelvic fin origin to anus; Vd: body depth lacking process from rim. Eyes large, close together. Mouth at pelvic fin origin; Vl: pelvic fin length. oblique, jaws subequal, posterior angle of jaws below ante- The terminology of lateral-line system follows Sanzo (1911) and Miller (1963) for Buenia jeffreysii. Poorly visi- ble papillae in preorbital, oculoscapular and anterior-dorsal rows were checked on three males (specimens from O≈tro, Kvarner area, Croatia, June 25, 1997) by the De Buen (1923) staining method and on three females (O≈tro, March 7, 1997) by the Iljin (1930) staining method. Vertebral counts and dorsal pterygiophore sequences were examined from cleared and stained specimens (Dingerkus and Uhler, 1977). The benthic communities were classified according to Pérès and Gamulin-Brida (1973). Sediments were sam- Figure 2. - Buenia affinis, female, 33.3 + 5.5 mm, O≈tro, Kvarner pled at the locality of O≈tro within the depth range of B. area, Croatia, May 16, 1996. 198 Cybium 2002, 26(3) Kova©i¢ A northern Adriatic population of Buenia affinis Table I. - Body proportions of Buenia affinis. Values for females in proportion to standard body length given in Table I. D1 and males are range, and, in parentheses, mean and standard devia- rays not elongate. P uppermost rays within membrane. V tion. Ab: anal fin base; Ad and Aw: body depth and width at anal fin origin; Cl: caudal fin length; CHd: cheek depth; CP, CPw and rounded, anterior membrane 1/3-1/2 length of spinous ray in CPd: caudal peduncle length, width and depth, CPw measured midline depth, with straight rear end. C rounded. with CPd, at minimum caudal peduncle depth; D1b and D2b: first and second dorsal fin base; E: eye diameter; H and Hw: head Scales. - Body covered with ctenoid scales. Predorsal area, length and width; I: interorbital width; Pl: pectoral fin length; PO: including nape, opercle and cheek naked. Breast scaled. postorbital length; SL: standard length; SN: snout length; SN/A and SN/AN: distance from snout to vertical of anal fin origin and Scales in lateral series 26-29 (16 specimens, left and right anus; SN/D1 and SN/D2: distance from snout to origin of first and side: 26: 12, 27: 6, 28: 12, 29: 2), in transverse series 6 (16 second dorsal fins; SN/V: distance from snout to vertical of pelvic specimens, left and right side: 6: 32). fin origin; V/AN: distance from pelvic fin origin to anus; Vd: body depth at pelvic fin origin; Vl: pelvic fin length. Coloration. - In life (from observations noted in the habi- Sex Males Females tat): body is transparent, with partially pigmented skin (dark n 8 8 brown, yellowish sandy and whitish blue colours) and SL (mm) 23.9-31.7 25.7-33.3 colours from internal organs: red gills and silvery perito- %SL, H 27.5-30.7 (29.4±1.3) 27.9-30.0 (28.9±0.7) neum. Eyes dark, with dark green pupil. The pattern of skin Hw 18.6-21.8 (20.1±1.2) 18.8-21.3 (19.9±1.0) pigmentation is the same as in freshly collected specimens SN/D1 34.6-38.3 (36.4±1.3) 34.5-40.1 (37.5±1.5) and it is here described in detail for the latter. Freshly pre- SN/D2 51.8-56.5 (54.2±1.7) 51.5-57.1 (55.5±1.9) served specimens (from slides): transparency lost, and body SN/AN 46.8-51.4 (48.8±1.7) 48.1-50.5 (49.4±0.8) became opaque. Upper part of body fawn, with pale saddles SN/A 52.8-58.2 (55.5±1.9) 53.5-58.5 (56.4±1.8) at nape, origin of D1, origin of D2, end of D2, on caudal SN/V 28.5-32.3 (30.3±1.3) 28.4-33.0 (30.2±1.6) peduncle and on the origin of C. Reticulate pattern, formed CP 25.1-29.9 (27.0±1.6) 24.4-29.6 (27.6±1.6) by dark markings along the scale margins, between saddles. D1b 12.9-15.6 (14.4±0.9) 13.4-15.0 (14.1±0.6) Below saddles four vertical irregular black to grey marks D2b 17.8-23.3 (20.6±1.9) 17.0-21.3 (19.5±1.4) along lateral midline and longitudinal T-shaped mark on Ab 15.9-20.8 (17.6±1.6) 14.0-17.7 (16.0±1.4) caudal origin, with two to three vertical light brown lines Cl 17.7-20.5 (18.9±0.9) 16.5-20.5 (18.4±1.1) between marks (visible only in adults). Underside, inclu- Pl 19.1-23.6 (21.5±1.7) 18.3-23.7 (20.6±1.9) ding breast and belly, whitish. Head fawn, with dark brown Vl 21.5-25.2 (23.6±1.2) 21.8-25.3 (23.5±1.3) band on preopercle, larger dark brown area on cheek and Vd 13.6-17.6 (16.2±1.3) 15.2-20.3 (17.3±1.6) dark brown stripe from eye to upper lip in adults, smaller Ad 13.0-14.8 (13.9±0.6) 13.2-14.8 (14.2±0.5) specimens without stripe from eye to upper lip. Eyes bright, Aw 11.9-13.0 (12.5±0.4) 11.3-13.9 (12.5±0.7) pupil dark. D1 and D2 with three light brown to grey bands, CPd 7.4-8.5 (7.9±0.4) 6.8-8.1 (7.3±0.4) D1 also with dark blotch on membrane around D1 VI. C CPw 3.8-5.0 (4.4±0.4) 4.6-5.6 (5.1±0.4) transparent. A yellow, with grey band along tip. P transpa- V/AN 16.9-19.9 (18.4±1.1) 18.3-21.8 (19.7±1.1) rent, with two oval marks, one at base of first upper ray, and %CP, CPd 24.7-31.8 (29.2±2.2) 24.7-30.3 (26.6±1.0) the second on bottom of third and fourth rays. V dark grey %H, SN 23.3-28.4 (25.9±2.0) 25.8-28.6 (26.7±1.9) in adults, transparent in smaller specimens. Coloration E 23.3-30.1 (26.8±2.2) 23.6-28.6 (26.0±1.4) became paler in the weeks following fixation, so the final PO 42.5-53.5 (47.3±3.9) 42.9-50.6 (47.3±2.2) colour of preserved specimens is fawn, with uniformly CHd 12.1-16.4 (14.6±1.6) 12.4-17.1 (14.6±1.6) brown markings, patterned as in freshly collected speci- Hw 64.8-71.2 (68.4±2.3) 64.0-75.0 (68.7±3.4) mens. No distinct sexual dimorphism is evident. %E, I 8.3-14.3 (10.3±2.3) 9.1+15.0 (12.8±1.7) %V/AN, Vl 113.3-142.0 (128.5±11.1) 106.1+136.2(119.7±9.4) Vertebrae and dorsal pterygiophores. - Number of vertebrae 11+16 - 11+17 (11+17: 8, 11+16: 1), including urostyle. Dorsal pterygiophore formula 3-122100 (3-122100: 9). rior border of pupil. Branchiostegal membrane attached Lateral line system (Fig. 3). - Head with anterior and poste- along entire lateral margin of isthmus from immediately rior oculoscapular, and preopercular canals, carrying pores anterior to pectoral margin. σ, λ, κ, ω, α, ρ, ρ1, ρ2 and γ, δ, ε respectively. Rows and Fins. - D1 VI; D2 I/8 (8:16); A I/7 (7:16); C 12 branched number of sensory papillae as follows: (1) preorbital rays (11:4; 12:10, 13:1, and the specimen 31.1+5.8 mm (n = 6): snout with three rows in median preorbital series, from O≈tro, Kvarner area, Croatia, May 16, 1996 with superior row r close to pore σ (1-2), inferior row s with two damaged C); P 15-16 (left and right side: 14 and 14: 1, 15 sections, s1 (1-2) close to nostrils, s2 (1-2) more medially. and 15: 6, 15 and 16: 5, 16 and 16: 4). Fin-bases and lengths Lateral series c in two parts: anterior upper c2 (1-2) and Cybium 2002, 26(3) 199 A northern Adriatic population of Buenia affinis Kova©i¢ ring of rocks). The characteristic invertebrate macrofauna of B. affinis habitat studied at O≈tro belongs to the biocenosis of the well sorted fine sands (Aiptasia mutabilis, Cerianthus membranaceus, Condylactis aurantiaca, Acanthocardia aculeata, A. spinosa, Callista chione, Ensis ensis, Psammobia depressa, Tellina tenuis, Venus casina, Eunice aphroditios, Hermonia hystrix, Sabella pavonina, Sabella spallanzanii, Astropecten auranciacus, Echinaster seposi- tus, Holothuria forskali, H. tubulosa, Phallusia mammilla- ta) and to the biocenosis of rough sands and fine gravels under the influence of bottom currents (Branchiostoma lan- ceolatum, Dosinia exoleta).The most common syntopic fish Figure 3. - Buenia affinis, head lateral-line sensory papillae and canal pores, male, 27.7+4.9 mm, O≈tro, Kvarner area, Croatia, June species with B. affinis were the epibenthic Gobius roulei 25, 1997. AN, PN, anterior and posterior nostrils; see other termi- and hyperbenthic Coris julis. During divings another four nology in the text. hyperbenthic (Serranus hepatus, Spicara flexuosa, Symphodus cinereus, S. ocellatus), seven epibenthic (Gobius posterior lower c1 (3). (2) suborbital (n = 16): rows a and c, bucchichi, G. couchi, G. geniporus, G. niger, G. vittatus, including cp, without transverse proliferation; a below rear Parablennius tentacularis, Trachinus draco) and one cryp- part of eye (2); c below eye (5), anteriorly beginning with tobenthic species (Chromogobius zebratus) were also obser- two papillae below front border of eye, posteriorly ending ved with B. affinis. before cp and a rows; cp’ approximately below cp. Longitudinal row b short (2-6), anteriorly beginning below rear border of eye. Longitudinal row d with separated supra- DISCUSSION labial (6-12) and horizontal part (4-7). (3) preoperculo-man- dibular (n = 16): external row e and internal row i divided The genus Buenia is represented by two species, B. affi- into anterior (e: 15-23, i: 8-16), and posterior sections (e: nis and B. jeffreysii. B. jeffreysii is well documented along 17-26, i: 10-13); row f (2) joined with row i in some speci- the eastern Atlantic coast (Miller, 1963, 1973, 1986). On the mens. (4) oculoscapular (n = 6): anterior longitudinal row other hand, B. affinis, despite being listed as a valid species x1 divided in anterior section (2-5) above row z and poste- (Tortonese, 1975; ‰tev©i¢, 1977; Jardas, 1996 for the rior section (2-5) above row q, posterior longitudinal row x2 Adriatic Sea, and Miller, 1973, 1986 for the Mediterranean) (2-3) above and behind pore ρ2; row z (4-5) behind pore γ, or junior synonym (De Buen, 1923; Ninni, 1938; ‰oljan, row q (0-2) and u (1) between pores ρ and ρ1, row y (1) 1948; Cavinato, 1952; Bini, 1969), has only a few, mostly behind pore ρ2. Axillary rows as1 (3-4), as2 (3-7), as3 (2-7), doubtful records (Sanzo, 1911; Fage, 1918; Miller, 1986; la1 (1-2) and la2 (1-3) present. (5) opercular (n = 16): trans- Costa et al., 1996). Used as junior synonym (De Buen, verse row ot (13-19); superior longitudinal row os (5-11); 1923; Ninni, 1938; ‰oljan, 1948; Cavinato, 1952; Bini, and interior longitudinal row oi (4-7). (6) anterior dorsal 1969), B. affinis was confused with Pomatoschistus marmo- (n = 6): row n (0-1), row g (3-5), row o (1-3), row m (1-3) ratus (Risso, 1810) (used synonyms: G. marmoratus, G. and row h (6-12) present. affinis, G. reticulatus Valenciennes, 1837, G. rhodopterus Günther, 1861). Ecology The lateral line system published by Sanzo (1911) mat- B. affinis was observed at depths of 3 to 25 m, but occur- ches well the present data. The only comparable morpholo- red most frequently from 5 to 20 m. Specimens were present gical characters for adults from Fage’s (1918) postlarvae are exclusively on the sandy sediments at all localities in the meristics of D2 and A, and they clearly differ from the pre- Kvarner area where it was recorded. These sandy bottoms sently collected specimens. There have been no published were mostly clear, although at places scarcely covered with records of B. affinis since Sanzo (1911) and Fage (1918) cobbles (6-20 cm) and boulders (> 20 cm). The average except for the third location in the map by Miller (1986) and particle size of sand at the B. affinis habitat at O≈tro showed a doubtful record published by Costa et al. (1996). However, that the species occurred on coarse sands (D 0.7-0.8 mm, the origin and the data for the third record in Miller (1986) 50 depths 5, 7.5 and 12.5 m) and medium sands (D 0.2- remained unknown. Morphological characters of specimens 50 0.4 mm, depths 10, 15 and 20 m). The sediments investiga- from Sicily published in Costa et al. (1996) are scarce. ted consist mostly of coarse biogenous fragments (calcite Nevertheless, body and head shape, presence of post- skeleton remains) mixed with finer lithogenous material maxillary process of the premaxilla, meristics (“D2 = 12; (fragments originated from the desintegrations and weathe- A = II-10; C = 22”) and coloration pattern clearly disagree 200 Cybium 2002, 26(3) Kova©i¢ A northern Adriatic population of Buenia affinis with the presently collected specimens and all the other ILJIN B.S., 1930. - Le système des Gobiidés. Trab. Inst. Esp. Oceanogr., 2: 1-63. sand gobies. The specimens from Sicily resemble mostly on JARDAS I., 1996. - The Adriatic ichthyofauna (in Croatian). Millerigobius macrocephalus or Zebrus zebrus. 536 p. Zagreb, Croatia: ‰kolska knjiga. The presented data show that only two positive records KOLOMBATOVI¶ G., 1891. - Gobies of the marine area of Split, for B. affinis are known: the western Mediterranean from Dalmatia (in Croatian and Italian). 29 p. Split, Croatia: C.K. Naples, Italy (Sanzo, 1911) and the Adriatic from the Velika realka u Splitu. Kvarner area, Croatia (recent data) (Fig. 1). However, I McKAY S.I. & P.J. MILLER, 1997. - The affinities of European sand gobies (Teleostei: Gobiidae). J. Nat. Hist., 31: 1457- share the opinion expressed by P.J. Miller (personal com- 1482. munication) based on the illustration of lateral line system MILLER P.J., 1963. - Taxonomy and biology of the genus Lebetus that it is more likely that specimens shortly described in (Teleostei-Gobioidea). Bull. Brit. Mus. (Nat. His.), Zool., 10: Zander (1982) from Banyuls, France, are B. affinis than 205-256. B. jeffreysii, so two possible records remain in the western MILLER P.J., 1972. - The identity of Gobius affinis Kolombatovi¢, with notes on the systematics and biology of Pomatoschistus Mediterranean: Banyuls (Zander, 1982) and locality approxi- pictus (Malm) (Pisces, Gobiidae). Ann. Mus. Civ. Stor. Nat., mately between Nice and Genoa (Miller, 1986). Therefore, 77: 342-358. the two Buenia species could be clearly geographically MILLER P.J., 1973. - Gobiidae. In: Check-List of the Fishes of the separated on Mediterranean species B. affinis and the eas- North-Eastern Atlantic and of the Mediterranean (CLOFNAM) (Hureau J.-C. & T. Monod, eds), pp. 483-515. Paris: tern Atlantic B. jeffreysii. UNESCO. MILLER P.J., 1986. - Gobiidae. In: Fishes of the North-eastern Atlantic and the Mediterranean, Vol. III. (Whitehead P.J.P., Acknowledgments. - Diving assistence was provided by M. Arko Bauchot M.-L., Hureau J.-C., Nielsen J. & E. Tortonese, eds), Pijevac, I. Bilopavlovi¢ and M. Kirin©i¢. I thank P.J. Miller for pp. 1019-1085. Paris: UNESCO. checking of the species identification and for suggestions and cri- MILLER P.J., 1988. - New species of Corcyrogobius, Thorogobius ticism of this paper, M. Arko-Pijevac for the help with biocenolo- gical data, ¸. Benac for help with the sedimentological data. and Wheelerigobius from West Africa (Teleostei: Gobiidae). J. Nat. Hist., 22: 1245-1262. NINNI E., 1938. - I Gobius dei mari e delle acque interne d’Italia. Mem. Comm. Talassogr. Ital., 242: 1-169. PÉRÈS J.M. & H. GAMULIN-BRIDA, 1973. - Biological REFERENCES Oceanography: Benthos, Benthic bionomy of the Adriatic Sea (in Croatian). 493 p. Zagreb, Croatia: ‰kolska knjiga. ANONYMOUS, 1990. - ASTM (American Standard Testing SANZO L., 1911. - Distribuzione delle papille cutanee (organi Methods) D 422-63. ciatiforme) e suo valore sistematico nei Gobi. Mitt. Zool. Stat. BELL F.G., 1993. - Engineering Properties of Soils and Rocks Neapel, 20: 249-328. (2nd ed.). 149 p. 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Esp. Oceanogr., 3: 121-266. ZANDER C.D., 1982. - Zur Morphologie und Biologie einiger DINGERKUS G. & L.D. UHLER, 1977. - Enzyme clearing of seltener Grundeln des Mittelmeeres (Pisces, Gobioidei, alcian blue stained small vertebrates for demonstration of car- Gobiidae). Senckenberg. marit., 14: 1-8. tilage. Stain Technol., 52: 229-232. FAGE L., 1918. - Shore-fishes. Rep. Dan. oceanogr. Exped. Med., Reçu le 12 décembre 2001. 2(A.3): 1-154. Accepté pour publication le 25 mars 2002. Cybium 2002, 26(3) 201